GB1108721A - Process for the alkaline polymerisation of lactams - Google Patents
Process for the alkaline polymerisation of lactamsInfo
- Publication number
- GB1108721A GB1108721A GB47694/66A GB4769466A GB1108721A GB 1108721 A GB1108721 A GB 1108721A GB 47694/66 A GB47694/66 A GB 47694/66A GB 4769466 A GB4769466 A GB 4769466A GB 1108721 A GB1108721 A GB 1108721A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lactam
- carbodiimide
- caprolactam
- laurinlactam
- cocatalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
- C08G69/18—Anionic polymerisation
- C08G69/20—Anionic polymerisation characterised by the catalysts used
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
Abstract
In the alkaline polymerization at 100-270 DEG C. of a lactam with more than six ring members there is used as cocatalyst an aromatic polycarbodiimide containing at least three of the repeating units <FORM:1108721/C3/1> wherein R represents a C1- 4 alkyl group. The cocatalyst may amount to 0.2-5 wt. per cent (preferably 0.3-1.5%) of the lactam. Suitable lactams are caprolactam, enanthlactam, capryllactam, methyl capryl lactam and laurinlactam. Suitable catalysts are alkali metals and alkyls, hydrides, hydroxides, carbonate and lactam salts thereof, and Grignard reagents; these usually amount to 0.1-1.5 mol per cent of the lactam. In Examples 1-3 poly-(o:o-dimethyl)-p-phenylene carbodiimide and poly-(o:o-diisopropyl) - p - phenylene carbodiimide are used in conjunction with ethylmagnesium bromide or sodium caprolactam to polymerize caprolactam or laurinlactam. In comparative Example 4 diisopropyl carbodiimide and dicyclohexyl carbodiimide are used as cocatalysts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1478465A CH449258A (en) | 1965-10-25 | 1965-10-25 | Process for the alkaline polymerization of lactams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1108721A true GB1108721A (en) | 1968-04-03 |
Family
ID=4403788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47694/66A Expired GB1108721A (en) | 1965-10-25 | 1966-10-24 | Process for the alkaline polymerisation of lactams |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3538060A (en) |
| AT (1) | AT265644B (en) |
| BE (1) | BE688810A (en) |
| CH (1) | CH449258A (en) |
| DE (1) | DE1620925B1 (en) |
| ES (1) | ES332685A1 (en) |
| GB (1) | GB1108721A (en) |
| NL (2) | NL6615032A (en) |
| SE (1) | SE325414B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ2014930A3 (en) * | 2014-12-18 | 2016-03-23 | Univerzita Pardubice | Process for preparing biodegradable polymers, biodegradable polymers and their use |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL106789C (en) * | 1956-08-18 | |||
| GB1045628A (en) * | 1963-03-11 | 1966-10-12 | Polymer Corp | Polymerization process |
| NL6404501A (en) * | 1964-04-22 | 1965-10-25 |
-
0
- NL NL133774D patent/NL133774C/xx active
-
1965
- 1965-10-25 CH CH1478465A patent/CH449258A/en unknown
-
1966
- 1966-09-30 DE DE1966I0031896 patent/DE1620925B1/en not_active Withdrawn
- 1966-10-24 SE SE14578/66A patent/SE325414B/xx unknown
- 1966-10-24 AT AT989466A patent/AT265644B/en active
- 1966-10-24 ES ES0332685A patent/ES332685A1/en not_active Expired
- 1966-10-24 NL NL6615032A patent/NL6615032A/xx unknown
- 1966-10-24 GB GB47694/66A patent/GB1108721A/en not_active Expired
- 1966-10-24 BE BE688810D patent/BE688810A/xx unknown
-
1969
- 1969-04-28 US US820009A patent/US3538060A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL6615032A (en) | 1967-04-26 |
| NL133774C (en) | |
| AT265644B (en) | 1968-10-25 |
| BE688810A (en) | 1967-03-31 |
| US3538060A (en) | 1970-11-03 |
| SE325414B (en) | 1970-06-29 |
| DE1620925B1 (en) | 1970-02-12 |
| CH449258A (en) | 1967-12-31 |
| ES332685A1 (en) | 1967-07-16 |
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